Definition

Noun: A magnetic bubble memory is a type of non-volatile computer memory technology. It stores digital data as the presence or absence of magnetized regions, called "bubbles," within a thin film of magnetic material. These bubbles are moved through the film to be read. This technology is now obsolete and is no longer used in most modern computers.

Usage

This term is a technical, historical noun used specifically in the context of computer hardware and memory technology. It refers to a physical device. * Early portable computers sometimes used magnetic bubble memory for storage. * The development of magnetic bubble memory was an important step in the search for reliable, solid-state storage.

Advanced Usage

• The term is often used in historical or educational discussions about the evolution of data storage, contrasting it with technologies like core memory, floppy disks, and modern flash memory.
• It can be referenced to highlight the properties of non-volatility (data is retained when power is off) and solid-state design (no moving mechanical parts).

Variants and Related Words

• Bubble memory: A common shortened form of "magnetic bubble memory."
• Non-volatile memory (NVM): The broader category of memory that retains data without power, which includes magnetic bubble memory, ROM, and flash memory.

Synonyms

• Bubble memory (the direct synonym).
• Solid-state memory (describes the broader technical category, though not all solid-state memory is bubble memory).
• Obsolete storage technology (a descriptive synonym focusing on its current status).

Antonyms

• Volatile memory (e.g., RAM, which loses data when power is off).
• Modern storage (e.g., SSD, flash drive, hard disk drive in current use).

Noun

1. a nonvolatile storage device that holds information in the form of bubbles on a thin film of magnetic silicate; no longer used in most computers